Seco-Larm E-931-S35RRQ Enforcer Indoor/Outdoor Wall Mounted Photoelectric Beam Sensor with 35 Foot Range

Tested it indoors at up to 16m and it was working reliably, I ran out of more distance to test. But in the end I installed it for my swinging gate outdoors which is only about 6m and it was a breeze. Saved me from the hassle of replacing the old sensor’s batteries every few weeks.I have to say the reflector is pretty small (about the size of 3 fingers) so aiming is challenging but not too hard. Power the sensor, hold the reflector in your hand right in front of it, then slowly move to the other side while making the necessary adjustments and it should be fairly easy and quick.

Wired this into my konnected smart alarm to notify me when the pizza guy walked up the drive. I love it. No more surprises. If the cops come up the drive I have time to hit the back door and over the fence before they realize I'm gone.

bought this wire https://a.co/d/fwDGndn, wire the device wires brown+white wire to cable red,blue device wire to black wire of cable, gray wire device to yellow cable wire, at the other end,(1) 12vdc electronics relay, one 12vdc power pack, wire 12+ to red, common ground, ground right side of coil, yellow to left side if coil,for ardrino input, 5v to 300 or greater resister the other side of resister goes to common side of relay contacts, ground the other side of contacts, the just set homeseer event to change on open of input,mount the reflector about 4' form ground, turn trimmer up all the way, have someone watch for the yellow led to come on (do not block the unit) as you move the reflector, then just mount the reflector in the spot it turned yellow led on and you are done

Works as advertised. Very sensitive with a fairly tight beam at 12'. I use one of these as a driveway alarm and another to protect entry in this area of my yard. A couple of hints/suggestions. First, test the unit before installing to make sure the relay works in both directions (one of my units had a bad relay. Amazon replaced it and the new one and another I bought work fine.) Testing will also enable you to learn the sensitivity, which is adjustable, and beam width for your application. In my driveway application, the beam was maybe three inches wide at 12' which was just right. I tied the center (white) and the 12V positive (I used the blue for positive) together so that I only needed a four conduction cable to connect to my alarm system and used the beam broken sense (black) and the 12V negative (brown) to drive a small relay which I then connect to a couple of alarm devices that typically look for a dry relay contact as input. Tieing the white and blue together saved me a connection. I used the 12V sense to drive a down stream relay in order to isolate the unit from the alarm system controls down stream. The other issue to pay attention to is the beam on/off pulse width which can be very short if, for example, you walk quickly through the beam. To be sure I didn't miss a beam break, I inserted a one second timer down stream before the second relay that basically converts a very short input pulse to a one second pulse so that I didn't miss a short pulse. May not be necessary in your application, but it was in mine and there is no downside to doing this. Amazon sells little adjustable timers for this purpose if you don't want to build one from a 555. It would be nice if this delay was built into the unit. I have seen other similar systems that have this function. I will also mention that while a decent reflector is included, you can use a low cost red type reflector Amazon also sells this very nice larger circular reflector, but it's $12 and not really needed unless maybe operating at maximum range. One tip on using the included reflector is that to make it easier to mount with a single screw, just drill a hole in the center label at the top of the reflector and use a small screw. Not sure why they didn't do this. I also found that the sensor unit needs to be more securely mounted than the reflector.

The bright ness and the quality is top notch

The unit was bought as a direct replacement for an existing one, operating a motorized exterior door, since it was installed without a protection from the rain, preventing water could go through the adjusting screw and the adjustment access upwards, instead of protecting it through a sideways installation. There is a factory installed o-ring preventing water from damaging the unit, but it doesn't guarantee a full water ingress. Therefore, a cover has been added to the replacement, protecting it against rain and extending its useful life. Complete installation instructions make the installation fairly easy. Other than this inconvenience, it works as intended.

The wiring is different for all models, but a brief google search will help you figure it out. I have a co-z opener and found instructions quickly.

zero mounting instructions, had to mirror the replacement. However if it was a new install I would have been stuck. Once mounted and hooked up it worked well. Took about 15 minutes for process.